This Corps was originally formed in 21 Jan 1943 under the designation of 1913 11th Army Tank Regiment (Ontario Regiment) Cadet Corps. In 1948, designation was changed to 1913 11th Armoured Regiment
(Ont R) Cadet Corps. In Mar 1949 authority was granted for the Corps to be redesignated as 1913 Ontario Regiment Cadet Corps. The Ontario Regiment RCAC has been sponsor and affiliated unit since the formation in 1943. Old Cadet Corps flag laid up in St.Matthew's Anglican Church in Oshawa (1980).